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// $G $F.go && $L $F.$A && ./$A.out

// Copyright 2009 The Go Authors. All rights reserved.

// Use of this source code is governed by a BSD-style

// license that can be found in the LICENSE file.

package main

import (

        "fmt"

        "os"

        "unicode/utf8"

)

func main() {

        s := "\000\123\x00\xca\xFE\u0123\ubabe\U0000babe\U0010FFFFx"

        expect := []rune{0, 0123, 0, 0xFFFD, 0xFFFD, 0x123, 0xbabe, 0xbabe, 0x10FFFF, 'x'}

        offset := 0

        var i int

        var c rune

        ok := true

        cnum := 0

        for i, c = range s {

                r, size := utf8.DecodeRuneInString(s[i:len(s)]) // check it another way

                if i != offset {

                        fmt.Printf("unexpected offset %d not %d\n", i, offset)

                        ok = false

                }

                if r != expect[cnum] {

                        fmt.Printf("unexpected rune %d from DecodeRuneInString: %x not %x\n", i, r, expect[cnum])

                        ok = false

                }

                if c != expect[cnum] {

                        fmt.Printf("unexpected rune %d from range: %x not %x\n", i, r, expect[cnum])

                        ok = false

                }

                offset += size

                cnum++

        }

        if i != len(s)-1 {

                fmt.Println("after loop i is", i, "not", len(s)-1)

                ok = false

        }

        i = 12345

        c = 23456

        for i, c = range "" {

        }

        if i != 12345 {

                fmt.Println("range empty string assigned to index:", i)

                ok = false

        }

        if c != 23456 {

                fmt.Println("range empty string assigned to value:", c)

                ok = false

        }

        if !ok {

                fmt.Println("BUG: stringrange")

                os.Exit(1)

        }

}